[UPDATED with All IDs, Pleas to Revised Charges:] No Murder Counts in Shooting Death of Minh Kinh Dang in Medical Pot Delivery Robbery-Gone-Bad

UPDATE, JUNE 28, 10:55 A.M.: Authorities have identified the third man who allegedly tried to rob a medical-marijuana deliveryman--only to watch his partner get shot and killed by a security guard--as 20-year-old Hwa Sung Sim.

Because Minh Kinh Dang of Santa Ana was killed in the apparent commission of a robbery, Sim; James Yi, 18, of Irvine; and Earl Augustus Austin, 19, of Santa Ana, were originally held by police for suspected murder. But the three pleaded to charges and sentencing enhancements related to robbery on Monday in Orange County Superior Court.

Austin pleaded guilty to felony attempted robbery, with a possible sentencing enhancement for the use of a firearm in the commission of a felony. He is scheduled to be sentenced on Aug. 19.

Yi and Sim pleaded not guilty to the same charge and possible sentencing enhancement, while Yi also denied a second possible sentencing enhancement for the use of a dangerous or deadly weapon. They are scheduled to return to court July 6 for a pretrial hearing.

But after Dang whipped out a gun, the deliveryman's security guard produced his own and fatally shot Dang, according to police.

Now, Dang's three accomplices are being held for his murder.

This all went down just before 8:15 p.m. in the Birchwood Village apartment complex, located at 1717 E. Birch St., Brea. The unidentified guard fired three rounds at Dang, and the sound of the blasts produced a police call of shots fired.

Officers arrived and, after seeing Dang's dead body on the ground, initially held the guard. But after questioning him and the deliveryman, also unidentified, as was his Los Angeles medical-marijuana dispensary, they were released.

Arrested for armed robbery and Dang's murder were: James Yi, 18, of Irvine; Earl Augustus Austin, 19, of Santa Ana; and an unidentified third male.

Matt Coker has been engaging, enraging and entertaining readers of newspapers, magazines and websites for decades. He spent the first 13 years of his career in journalism at daily newspapers before "graduating" to OC Weekly in 1995 as the paper's first calendar editor. He has contributed as a freelance editor and writer to several publications and been the subject of or featured in several reports online, in print and on the radio and television. One of countless times he returned to his Costa Mesa, CA, home with a bounty of awards from a journalism competition, his wife told him to take out the trash.